X-Sense Smart Mailbox Alarm, Wireless Long Range Mailbox Alert, Mailbox Sensor with SBS50 Base Station for Delivered Mail, SMA11

I installed this on my mailbox yesterday and was absolutely thrilled to find how well it works. I had no problem installing it as the instruction were clear and prompted you on the App through each step. It would have been easier as a two man job but I was able to do it all by myself and I am 71 years old!! My mailman comes all different times so this was a must for me as I was running out to the mailbox all day to find he had not yet arrived. Now I know exactly when my mail has been delivered. Great Product.

According to Google Maps, the sensor and base station are 100' from each other, though it's probably a little less (I did some manual measuring but did not want to run my reel tape across the street). Please see the associated picture for my setup. The base station is in my garage on large, cluttered steel shelving, and we have a metal garage door and stucco exterior. The mailbox is also metal, and although the company recommends installing the sensor on the outside of a metal mailbox, that's unreasonable if you think someone might be stealing your mail since they could just slide the sensor right off. So I installed it inside the mailbox. Part of the reason I got the sensor was neighbors complaining about their mail being stolen, but using "USPS Informed Delivery" I can see what I am expecting each day, and an alert from this sensor lets me grab the mail as soon as it arrives if I'm home. It's only been installed a few days but so far it has worked 100% of the time (as confirmed by my own testing and Ring cameras which snapshot every 30 seconds). My mailbox was here when we moved in, and it's a bit unusual. It has a swinging top portion and a locked lower portion. When the mail is delivered, the top portion opens enough that mail can come in, but not your hand, since there is a metal guard that also flips up. I installed the sensor on the lower, inside portion of the metal flap, so it does not block mail delivery (again, see photos), but that means there is always one or two layers of metal between the sensor and the outside which I was afraid would block the signal. In fact, I previously purchased a Ring mailbox sensor that never successfully alerted me to any mail. It triggered in a few tests, but was never reliable inside the box despite the huge antenna. One reason I bought the X-Sense was the separate base station, which could be closer to the mailbox than the Ring Bridge. Ring only lets you have one Bridge, and moving it to the front corner of the garage sacrificed the connection to the lights at the back of our property and still didn't detect the mail. Now the Ring Bridge is in the back of the house, and the X-Sense Base Station is in the Garage. The Ring Sensor might have theoretically been able to trigger cameras that would record who was accessing the mailbox, but since it never worked at all, it was a moot point. On sale, these units cost about the same (even with the X-Sense base station included). The X-Sense is also smaller and easier to install as well as being more effective and reliable. Contrary to another recent review, the app definitely works on Android. I am using a Pixel 6a (2.5yrs old at the time of my review) and it has no issues. Perhaps the other reviewer had a phone that was limited to an out of date Android OS. I am on Android 15. All in all, 5 stars! It even came with two adhesive pads for the backer. My only gripe is that has a two minute delay after triggering before it will trigger again, and I'd like to be able to adjust that timer, but I understand the reasoning.

t’s great to find a very useful item at a great price and this mailbox alarm is no exception. Our mail box is about 50 to 60 feet away, with a slight bend in the line of sight and a tree and brick wall in the way. Today the temp is 13 deg Fahrenheit and it worked like a charm. The base unit is in the entryway and has a green x on top when set. The x turns red when triggered and is reset by pressing a button on the back of the base unit. Battery life is stated to be about 4 years and is replaceable. Installation and setup is very easy. The unit emits a tone and the red x flashes when the mailbox door in opened. The ring tone can be changed with 5 different tones. There is also an app that notifies you even when away. My only suggestion (not complaint) would be to allow reseting the unit from the app. This would be great if I couldn’t get to the base unit to reset it if I was away or another part of the house. If necessary I would buy this mailbox alarm again.

Sb550 base will work and the box alarm also works. However, very difficult to setup. The box alarm would not flash blue. After a month and a half of trying to get it working it finally worked. I turned the alarm upside down and saw a faint light flicker. I pressed on it and it locked onto my WiFi and it worked. The alarm never worked as shown in the instructions. Very frustrating. I got it installed finally accidentally just not the way the instructions showed.

Très efficace

Excellent product, highly recommend. Now that Canada Post is not putting up the red flag we found someone tampering with our mailbox, purchased this item and it works a charm, we know instantly when the mailbox has been opened. You cannot see our house from the road and we are surrounded with trees but the signal comes through just fine. It is nice to have 2 people to set it up, one on the phone app and the other reading the instructions because they are so small you need a magnifying glass. We don't have a router and use my phone as a hotspot, working perfectly. If you have a rural mailbox I highly suggest purchasing this product.

My mailbox is a long way away but it works perfectly.

Longue portée, facile à mettre en place. Très pratique avertie dès que la boite aux lettres est ouvertes.

Tape does not hold. Great sensor poor not well thought out install